90543527907 has 32 divisors (see below), whose sum is σ = 138987878400. Its totient is φ = 51359242368.

The previous prime is 90543527897. The next prime is 90543527929. The reversal of 90543527907 is 70972534509.

It is not a de Polignac number, because 90543527907 - 2⁶ = 90543527843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90543527907.

It is not an unprimeable number, because it can be changed into a prime (90543525907) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1562569 + ... + 1619477.

It is an arithmetic number, because the mean of its divisors is an integer number (4343371200).

Almost surely, 2^90543527907 is an apocalyptic number.

90543527907 is a deficient number, since it is larger than the sum of its proper divisors (48444350493).

90543527907 is a wasteful number, since it uses less digits than its factorization.

90543527907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57475.

The product of its (nonzero) digits is 2381400, while the sum is 51.

The spelling of 90543527907 in words is "ninety billion, five hundred forty-three million, five hundred twenty-seven thousand, nine hundred seven".